Gardner Bender LNW-KIT Locknut Wrench Kit, Specifically Developed For Tightening & Loosening Locknuts, Can Be Used To Loosen Or Tighten A Locknut By Rotating The Wrench In The Direction Of The Arrows Clearly Etched Into Both Ends Of It's Sturdy Steel Construction, A Specialty Hooked Tip Latches Onto The Locknut & Maximizes Turning Leverage, Includes One 1/2" & One 3/4" Locknut Wrench.